Small-scale plasma, magnetic, and neutral density fluctuations in the nightside Venus atmosphere

Details Small-scale plasma, magnetic, and neutral density fluctuations in the nightside Venus atmosphere Small-scale plasma, magnetic, and neutral density fluctuations in the nightside Venus atmosphere

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.4085h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, April 1, 1990, p. 4085-4102.

Physics

10

Ionospheric Electron Density, Planetary Ionospheres, Planetary Magnetic Fields, Venus Atmosphere, Fast Fourier Transformations, Gravity Waves, Nocturnal Variations, Pioneer Venus 1 Spacecraft, Plasma Pressure, Plasma Turbulence, Venus, Nightside, Plasma, Magnetic Field, Neutral Particles, Density, Ionosphere, Spacecraft Observations, Pvo Mission, Temperture, Waves, Pressure, Turbulence, Thermosphere, Electrons, Comparisons, Spectra, Transport, Thermal Effects, Conduction, Heat, Calculations, Gravity Waves

Scientific paper

The evolution of the Venus small-scale waves as they propagate into the nightsite is examined, and the small-scale structures are compared with the waves in the three components of the magnetic field, magnetic dip angle, and neutral density. It is demonstrated that the small-scale fluctuations evolve between the transterminator and antisolar regions. It is shown that atmospheric gravity waves may also be producing some of the fluctuations observed at longer wavelengths. The electron temperature and density are shown to be approximately 180 deg out of phase and exhibiting the highest correlation of any pair of variables. Waves in the electron and neutral densities are found to be correlated moderately on most orbits, while the average electron temperature is higher when the average magnetic field is more horizontal.

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